The result was a 7 mm cartridge of comparable overall length to the .308 Winchester with greater case capacity and power potential.

The 7.5x55 Swiss provided inspiration for the cartridge, with the bullet diameter reduced to 7mm and the rim rebated to .473” to allow for the use of the bolt faces common to the 7.92×57mm Mauser and its many derivatives.

[4] The cartridge is sometimes used for long-range target shooting disciplines such as F-Class, where participants typically handload their ammunition.

With the .284 Winchester as the parent case wildcatters have created 6mm-284, 6.5mm-284, .284 Shehane, .30-284, .338-284, .35-284, .450 Bushmaster and the .375-284 variants and the .475 Wildey Magnum pistol cartridge.

has recognized and registered both the 30-284 NOLASCO,[6] and the extremely similar (in the US considered a "Wildcat cartridge" based on the .284 Winchester) 30-284 Win.

This former wildcat, made by necking down the original Winchester .284 casing to 6.5mm (.264), was developed for long range target shooting where participants usually handload their ammunition.

At that time, it was one of the most used non-wildcat cartridges by match shooters in F-Class and 1000 yd/m benchrest long range competitions.

[8] In 2022, because of advancements in high BC 7mm bullet designs, the original Winchester .284 case has made a comeback as the most preferred cartridge in F-class competitions with other .284 caliber (7mm) cartridge variants being wildcatted off the venerable original design (e.g., .284 KMR, .284 Shehane, .284 Wheeler, .284 Ackley Improved).

The Finnish cartridge company Lapua started making .284 Winchester brass (Product No.